Smoke-consuming furnace



2 Sheets-Sheet 1.

(No Model.

V U. H. GREWGOX 8; F. YEITER.. SMOKE CONSUMING FURNACE, No. 305,918. VPatented Sept. 30,1884.

N, PETERS. vhmu-Litm n ber, Washmginn. D. I;

(No Model.) 2 Sheets-Sheet 2.

0. H. GREWOOX 81; RYEITER. SMOKE OONSUMING FURNACE. No. 305,918.Patented Sept. 30, 1884.-

N. PETERS. Phnwulm n lm. Wmingmn. 0,0

I I UNITED STATES PATENT rrrcn.

CHARLES H. eanwoox Ann FRED "rnrrnn, on BBAINERD, MINNESOTA.

SMOKE-CONSUMING FURNACE.

SPECIFICATION forming part of Letters Patent No. 305,918, datedSeptember 30, 1884.

Application flied June 6, 188-1. (No'modeL) To all whom it may concern:

Be it known that we, CHARLES H. GREw- COX and FRED YEITER, citizens ofthe United $tates, residing at Brainerd, in the county of Grow \Ving andState of Minnesota, have in vented certain new and useful Improvementsin Smoke-Consuming Furnaces, of which the following is a specification,reference being bad therein to the accompanying drawings.

This invention pertains to improvements in smokeconsuining appliancesfor furnaces, more especially locomotive-boiler furnaces, although it isapplicable to all classes of steamboiler furnaces, and has for itsobject to effect a blast or powerful draft either when the eugine orlocomotive is out of or in action, to permit its being readily put intoand out of operation, and to allow the ready conversion of the furnacefrom a smoke-consuming into a nonsmokeconsuming furnace, and vice versa.

The invention therefore consists of the sundry combinations of parts andtheir construction, substantially as hereinafter fully set forth,

and pointed out in the claim.

In the accompanying drawings, which form a part of this specification,Figure]. is alongitudinal section of a locomotiveboiler furnace havingour invention. Fig. 2 is an end elevation, and Fig. 3 is a side viewthereof.

Similar letters of reference in the several drawings denote like parts.

In the embodiment of our invention we dispose in an inclined position inthe fire-born an arched imperforate partition, A, of suitable material,extending from side to side of the furnace, with its lower endjuxtaposited to the rear end of the latter, being sufficiently removedtherefrom to permit the required amount of upward draft and the ascentof any unconsumed products of combustion. The op posite or upper end ofthe arch is considerably removed or isolated from the front or door endof the furnace, the intermediate space as regards the size of the dooropening and the same amount of surface at that end of the arch beingspanned by an inclined plate, B, having coincident curvature with thearch. one end of said plate (the lower end) resting upon a rabbet, a, ofthe upper end of the arch, while the upper end of said plate bears orabuts against an inclined ledge, b, secured to or made a part of theinner surface of the front wall of the furnace. The plate B,thus restingupon the ledge b and in the rabbet c of the 5 5 arch, has freedom tocontract and expand, and the ledge is of proper material andconstruction as to withstand the heat. W'e deem it import-ant that theplate B be thus unconfined, and that its supports be made to stand thetemperature. This plate, together with the arch, forms arcarwardly-inc1ined and downwardly-sloping deflector conducting theflame and smoke in theplane of and exposing them,

as will more fully appear further on, to the 6 blast or a powerful draftfor their consumption, to utilize the same as fuel, and to abate thegreat nuisance of escaping or flying clouds of smoke and sparks. It isobvious that by removing theplate B, being readily removable, the draft,and consequently the course of the smoke and flame, will be caused totake a directly upward course, thereby rpndering the furnace availablefor use either with or without our invention as thus far described. "Wenext 7 5 arrange along both the front and back ends of the fireboxcasing, upon its outside, a short pipe, 0, which is supported uponbrackets at tached to the fire box casing, said pipes having one endconnected by additional pipes 8 G to a globe-valve, C of the boiler D,by means of which latter pipes and valve the steam is admitted to theshort pipes (1-. A series of branch pipes,E,extend from each of thepipes G to a contiguous point to the ends of the fire 8 5 box casing, infront of which ends of said branch pipes, and between cleats upon saidfire-box casing, are disposed, so as to slide,serially-apertured platesor valves F, which are connected together by jointed rod connections 0G, and these latter are so actuated by a common lever, G, as to effectthe operation or movement of said slides or valves F, the purpose ofwhich will be seen presently.

. Coincidently with the open ends of the se- 5 ries of branch pipes E,and made in the ends of the fire-box casing, are apertures I), throughwhich, by causing the apertures of the side or valve F to registertherewith, jets of steam are injected into the fire-box, whereby blastsrco or powerful drafts are generated to promote or quicken and intensifycombustion, and thoroughly consume the smoke and other previouslynon-consumed products of combustion.

readily cutoff or turned on,whenever required,

by accordingly moving thes'lide-valve lever. We deem it important thatthe steam enter upon opposite sides of the fire-box, and that all thesteam-entrances may be controlled simultaneously by a single lever.

We are aware that it is not new to introduce steam into the fire-box ofa furnace through apertures in the Walls thereof, and no claim is hereinbroadly made for such a device.

We are aware that plates corresponding to our plate B have beensupported on hooks; but such hooks are liable to be destroyed bytheheat, and are subject to different strains, arising from expansionand contraction of the plate.

What we claim as new is- In combination with a furnace havingsteaminlets arranged upon opposite. sides thereof,

and steam-pipe connections witheach of said inlets, controlled by asingle cock, as 0 the sliding gates having apertures registering withthe steam-inlets, and a single lever and connections with said gates,for controlling all the inlets simultaneously, as set forth.

In testimony whereof we affix our signatures in presence of twowitnesses.-

CHARLES H. e GREVVGOX. FRED YEITER.

WVitnesses:

W. E. ENTRIKIN, WILLIAM MAHEAD.

